US Patent 10340316 Display device utilizing pixel and dummy portions

A display device includes a first substrate, a second substrate comprising a pixel portion configured to display an image, and a dummy portion spaced from the pixel portion, a side of the dummy portion being exposed to the outside, and an interlayer between the first substrate and the second substrate, wherein the pixel portion and the dummy portion each include multiple layers, and at least one layer of the pixel portion and at least one layer of the dummy portion include a same material.